My 360 controller works and rumbles with the Dolphin emulator, and when testing it through the Preferences pane. It doesn't work with PSX or PCSX that well, and is hit-and-miss with PCSX2, but I know it rumbles. I don't know how to get it to work in PCSX 2 for Mac tho, but I still haven't tried your new plugin. Then again, my 360 controller is old and seen some battles, so it might be that too.